OPERATING HEATER
Continued
5.Turn control knob counterclockwise 
to the PILOT position. Press in control knob for five (5) seconds (see Figure 19).
Note: You may be running this heater for the first time after hooking up to gas sup- ply. If so, the control knob may need to be pressed in for 30 seconds or more. This will allow air to bleed from the gas system.
•If control knob does not pop up when released, contact a qualified service person or gas supplier for repairs.
6.With control knob pressed in, push down and release ignitor button (see Figure 19). This will light pilot. The pilot is attached to the front of burner. The pilot can be seen through the glass panel. If needed, keep pressing ignitor button until pilot lights.
Note: If pilot does not stay lit, refer to Troubleshooting, page 19. Also contact a qualified service person or gas supplier for repairs. Until repairs are made, light pilot with match. To light pilot with match, see Manual Lighting Procedure, page 16.
7.Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob.
•If control knob does not pop up when released, contact a qualified service person or gas supplier for repairs.
Note: If pilot goes out, repeat steps 3 through 7. This heater has a safety interlock system. Wait one (1) minute before lighting pilot again.
8.Turn control knob counterclockwise 
to desired heating level. The main burner should light. Set control knob to any heat level between 1 and 5.
CAUTION: Do not try to ad- just heating levels by using the equipment shutoff valve.
Ignitor Button | Control Knob |
| F |
| F |
| O |
Figure 19 - Control Knob In The OFF
Position (Piezo Ignitor Shown)
Thermocouple
Ignitor Electrode
Pilot Burner
Figure 20 - Pilot (actual pilot may vary)
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
1.Turn control knob clockwise 
to the OFF position.
2.Turn off all electric power to the appliance if service is to be performed.
Shutting Off Burner Only (pilot stays lit) | |
Turn control knob clockwise | to the |
PILOT position. |
|
THERMOSTAT
CONTROL OPERATION
The thermostatic control used on these models differs from standard thermostats. Standard thermostats simply turn on and off the burner. The thermostat used on this heater senses the room temperature. The thermostat adjusts the amount of gas flow to the burner. This increases or decreases the burner flame height. At times the room may exceed the set temperature. If so, the burner will shut off. The burner will cycle back on when room temperature drops below the set temperature. The control knob can be set to any heat level between 1 and 5. Selecting the 5 setting will cause the burner to remain fully on without modulating down in most cases. Note: The thermostat sensing bulb measures the temperature of air near the heater cabinet. This may not always agree with room tem- perature (depending on housing construction, installation location, room size, open air tem- peratures, etc.). Frequent use of your heater will let you determine your own comfort levels.
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